Quote:
Originally Posted by 12clicks
the car's speed is not constant and we're not talking about light heading away into space, we're talking about the closing speed of light. if the thing its closing on is moving, the speed of closure changes, the speed of light does not.
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Even if you are racing head on into a beam of light, the speed that the light is reaching you is the speed of light, not the speed of light + the speed of you travelling towards it. If you were racing towards me in a car going 100km/h and as you passed I threw a ball up with no horizontal speed, the ball would hit you as if it were traveling at 100km/h. Now if I stood ahead and threw the ball at you at 50km/h, when it hit you it would be going(relative to me, who is at rest) 50km/h + 100km/h. But it doesn't work that way with light, the speed of light remains a constant. So the fact that you're traveling towards the light doesn't mean that the light is hitting you any faster, the speed of light relative to anything remains the same.